Hey man. You need a Daw. Copy of Reaper? $60?
Interface - Focusrite Scarlet. Either a 2i2 or a 4i4…depending on how many mics you’ll need.
Speakers - Anything you can get a good deal on. Mono price makes an ultra affordable pair. KRK, JBL, Tannoy, Yamaha, and M audio all have some usable budget line stuff.
Mic - The Rode stuff is really popular…and quite inexpensive. Also that Audio Technica 4040 seems to be awfully good for $300.