Have a look at what fps your local site allows before buying w gun.
I would reccomend having a go at your local site with a hire gun before you commit to buying one.
Instead of just looking at the gun you're going to buy. Have a look at the kit you will buy as well. When I first started I made the mistake of buying a g36 and a vest with built in m4 mag pouches.
If there is w gun I can recommend it is the combat machine M4. I bought that gun about three years ago and it has been my primary ever since. It's cheap, it's very good, it's very customisable and it has served me without fault.
Good luck and welcome to the airsoft world!