I agree with everything said and your budget is doable but just like anything if you want it now and new its expensive. If possible take your time watch the forums and take it slow ive learned in this hobby patience us a virtue. Also whats your plan for equipment because you can go fairly basic if you are into a little more maintenance. Also listen to Anthony he knows best

Thanks for the advice, everyone. I think I'll get a 93 g cube kit for the guppies and just convert my 90 gallon overflow with make**** sump. It's not ideal as I will be pumping the return back into the tank with a spray bar. But it will be a brilliant way for me to get started, learn, and things started. When I'm ready and learn enough to know what setup is ideal for me, I'll already have equiptment and stock/rock on hand.

Just need a skimmer and quality light For the 90 g now.
Thanks again