Personally i think you should save the money you're using for upgrades and get a new gun.
I was going to do the same as you with my spyder, but realised i could spend loads of money upgrading an okay-ish gun, with it still not being that great OR keep the money and buy a good second hand marker (which will only need a few/no upgrades) and can keep up and even beat the high end markers... Easily.
Saying that the vs1 is supposed to do around 20bps out the box? Could be wrong. But for a newbie that's alright, just get some practice with it and save your money and get a new gun
just my opinion anyway