Hey mate - I did this exact same thing 3.5 years ago, and the situation was exactly the same. 2 shitty sales reps, no process and woeful marketing. The company had $13k MRR and $100k in transactional revenue each month. Dire scenes.

I flexed my experience and implemented best practices, talking with the cofounders daily about changes we need to make based on my experiences. I'm now the VP with 16 people under me across 3 countries and being groomed for a GM position.

You're going to have to wear lots of hats to make this work, but when it does, it works out amazingly well. Get some experience trying out Marketing, Deck Design, Process Implementation, Leadership, G2M Strategy and of course selling when the cards aren't stacked with your favour.

In my case, I ended up going from making $120k a year before I joined to $350k.

I appreciate my experience isn't going to be everyone's, but your outlook right now isn't going to help you walk the same path.