Monstera can take very bright light. West window with some afternoon light should be fine. Based on your username, I am going to assume its the middle of winter where you're at. I would wait to repot until Spring...ideally around Father's day but you could honestly do it any time...they are vigorous growers. Now if this were my plant, I would divide it up when repotting. I'm not a fan of having this many individual vines in a single container, as there is no way they would all be able to grow to their potential being cramped together like that. If you've seen pictures of Monstera in the wild, they are huge plants that grow fast and take up a lot of room. I usually separate into only 1-2 vines per container, meaning this single pot could be broken into like 6-7 or more. But again, that's just the approach I would take.

When you repot, definitely use a coarse aroid mix. 5-1-1 is frequently discussed on these forums, however there are many different variation of aroid/'jungle' mixes that people use with great success. I use Fox farm potting mix, fine grade orchid bark, and perlite in a 2:1:1 ratio for my Monstera and that works for me and the specific growing conditions that I have.

@philodendude thank you so much. Maybe I’ll split the plant up and try one west and one East in the spring to see how it does. As I was running around with this random dented plant box with large leaves poking out, My husband asked if the plant grows large...I demurred and said I had no idea guess he will be in for a surprise.

Nice save!

Nycish—have fun. Funny post.

@socks you’re just saying that because I mentioned that I was running around in socks

;)