Welcome to our forums even though you have been here for 2 weeks

. You have a pretty good idea of what you want to do which is nice. Now, as for server lemme give you the low-down.

A lot of high level players and mods are currently on the Xian server which is one of the more crowded server because I believe it was one of the first. Xian is also the most laggy server I believe, even though Joymax is working on fixing that. Troy, my server, is one of the middle servers, it is pretty old but still a nice environment with a number of good and bad people, but you will find those everywhere. If you want the newest server go to Venice, it has a lot less people and the least lag (But it is still bad). The choice is up to you, but the majority of the members of this forum are on those two. BTW, I believe all the server are mostly English, since this is iSRO, but there are still a large number or truely asian players on each server. I know this on Troy for a fact at least.
Lemme give you a couple of ideas of mine. The level 1-16 with a bow sounds good, but switching too a sword/shield might not be that great of an idea because sword is acually the slowest to grind with. So, if you really want to SP farm like no other I would reccomend getting a level 16 SOS bow which will let you farm a lot on Bandits and Bandit archers in the Bandit stronghold.
Your setup, I do not think gonig hybrid will be a good idea. If you are looking to do a LOT of damage go pure INT because this game seems to reward pure characters (Prepares to get flamed by SuicideGirl

). Now, you may be weak at PvP at first but nukers in this game arnt ment to tank at ALL, so later on when you are level 70 you will one hit people, therefore not need to take hits and have a lot of HP. Nukers are also really good in guild wars, so when more comes out with them you will be a big hit. Also, you should choose only 2 imbues. Ex: Sword/Shield (Bicheon), Fire, Light and possible level 17 force in order to res people. Remember, your character can only have a max of 300 masteries, so if you are really looking to go to level 80 you will need to lower your masteries because you cannot fit them all. (The level cap for iSRO is currently 70 right now) Now, if you are looking to be a nuker spear is the best, but if you really want that extra block you can go with sword/shield. Now, a nuker does not need physical skills after level 30, so those will just be a waste once to get to a high level, but they will make leveling to 30 easier.
Before I go more into skills you should go to this site:
http://www.nerdwerx.nl/sro/index.php it will tell you how much everything you will need. More on skills, I recommend you go fire/light as your imbues for a nuker. Fire does the most damage and lightning has splash damage. As for your fire skills I say that you should get fire rive force, max the whole series as this will be your major buff. You may want to get the flame shield series, but I am not entirely sure because I have never used sword/shield as a nuker. Do not get the flame body series as it is for physical attack and you will mostly be soley magical. Basic fire protection is a nice skill to have if you are PvPing another nuker and need some protection or just fighting a magical mob ie Yeoha!

Get the entire flame-wave arrow series, this is your fire nuke. Do not get flame devil as this is just a buff for physical.
For Lightning, you NEED to get the must-pierce force as this will increase your magical damage. Now, you were looking for a skill that makes you walk faster, so you should indeffinatly get the grass-walk series, but you may want to skip the grass-walk phantom because it is just a pointless little telewarp and doesn't really help. Now, if you can spare the SP you should probably get Concentration and Heavens force as this will increase your parry ratio which can make all the differance.
Now, if you decide to go spear you should at least get your Heuksal mastery to level 10 so you can get cheolsam force which will give you extra hp which you will dearly need. My current method of leveling my soon-to-be nuker is just use the imbue and normal skills while training on green/white mobs and not get any physical skills, that way I can save all my masteries and SP for my nuke skills.
That was me jsut rambling, so it probably doesnt make that much sense. If you wish I can clarify on anything. Good luck with your soon-to-be lvl 70 nuker! Hope I helped you a little bit. To give you some incentive, here is the 9th degree garment set which you will wear when your that level! (Level 76-81)
This is a high level Korean Fire/Light nuker. (They are fighting a level 90 unique mob not yet in iSRO)
