Reply to Need help purchasing gear!

Hey Guys

I'm relatively new to mixing and being a DJ.
Currently I'm running a NI S4, however there are two pieces of gear I need help deciding on.

Monitors-
Im looking to buy a set of studio monitors, money is limited so what would a decent monitor for a lower price be?

Controller-
Looking to buy something like a NI f1, midi fighter, or novation Launchpad to help me mash up songs, any input on this?

Thanks a ton
-Brendan