What to do now

[--LA--Primed_Aim]

Hello guys, i might need some help now since i have no idea what to do. 

I'm a MR11 guy with decent frames, which includes frost, ember, trinity, rhino, saryn p, excalibur and so on. The thing is (this is not a brag so don't get me wrong) i have 3.7k platinum, and i think i have purchased enough mods for 90% of the frames necessary. For example: Transient fortitude etc. 

The thing is, what should i do now? Should i either farm/buy primed frames and weapons, or just grind fusion cores to raise these mods? Or just build formas and make the builds totally complete. I have no idea. So if any of you have some suggestions, then i would appreciate it. 

[The_Raall]

use those ~4k plats for cosmetics and weapon/warframe slots and farm everything else yourself.

[i_Lex]

OR just give idk 1 k plat to me :DDDD

[(PSN)EnormeMostro]

Play raid 

Regular missions are big tutorial

[ThorienKELL]

Things to spend lot of money on? Cosmetics. Rare /vaulted gear. 

Arcanes.

[MichelPostma]

Don't spend your palts on vaulted items, just wait for them to come back. 

Buy yourself landing crafts, slots, cosmetics or something the like