First of all Hello everybody i'm a new user although I have been lurking for quite sometime now. Anyway I'm looking for a bit of direction as to what I should do with my routine. I see all these people and articles saying to wait to do a split routine until you have built your "base" or foundation, and until then stick with the 3day fullbody type routines.
So I have been lifting using a 3day/week type routine for about a year and a half now and have gone from 5'6'' 115lbs to 5'7'' 155lbs. My box squat is 315x2, DL 350x4, Bench 225x1. Lately I have been stalling so much both on size and strenght gains, so my question is have I built enough of a "base" to move on to doing a split type routine? Apologies for not being very concise.