Iv spent allot of money into buying some nice gear for my guitar but i never actually bought stuff for practices which are important like PA systems and stuff...
For band practices should i just buy 2 stage monitors and a mixer? Im new at this stuff so go right ahead and laugh lol. I just need something that will make it so my Bassist and I (the guitarist/singer) can hear Im sure my drummer will hear fine though

Green day.. Rammstein... I have weird musical taste
Are you talking about powered stage monitors (wedges) or a powered mixer? Personally I'd just go for a mixer, an amp and then whatever speakers you like. Good wedges would be a good idea because if there's one thing house PAs often neglect it's decent wedges, they spend money on front of house and neglect the poor musos on the stage doing all the work.
If you do go the route of powered wedges just make sure they have a decent amp in them.
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band
My band just puts the our two mikes into a monitor with two inputs. It carries both sets of vocals, and our amps/drums carry the rest. It depends on how big your practice space is.