I say coilovers first, then you could sell the old ones to start a fund for better brake pads, 2 pluses there, you don't have to worry about ripping your oil pan off, and coilovers can help with brakeing, at least with the weight transfer part and being able to stop harder without coilovers could be detramental to your oil pan (srsly, you need a custom pan or something, that thing is gonna get ripped off one day and shit will indeed be all bad)