Have you already PM'ed someone for Age Verification?
It can sometimes take a while for them to get back to you and meet when it's a good time for both of you. I think it took about 2 weeks total to find a time that we could both meet and then another 4-5 days for verification.
As for M4's, although cliche, it's actually a good choice because of the replacement parts and gundocs who know the gun very well. I actually have one. I have an unbranded one (got it in a classified sale). It was a pretty good deal actually, about $450 (gun+ 1 battery).
If you're wanting to go higher end but not PTW then G&P, and KA are probably what you should be looking at. I've seen these go for about $650-850 depending on the package (mags, battery, charger, etc).
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE