Advice on resource allotment at early stage

I recently took over the tech side of the house at an early stage, pre-rev startup. The founder had an overseas company developing the app that (in my opinion) was exploiting their lack of tech knowledge to get as much money out of them as possible. We broke things off with them and are starting to peel back the layers of what they handed off and it's a mess. Now, what they built runs well enough that we were able to launch the pilot this last week at least. While the pilot is running we have some time to get things in order, however, **there are \~2 critical features we need to get developed and deployed asap**. My experience is entirely in front end, so there is risk of not having someone to monitor/maintain backend (which went down one time pre-release but we were able to get the old company to deploy a fix). As I see it there are a few decisions that need to be made at this moment using limited resources: **- Hire someone part time to manage backend** Pros: They have time to get familiar with the environment, needs before anything goes wrong as we increase users. Cons: Backend is expensive, takes significant resources from elsewhere. **- Hire additional frontend help for feature dev & bug fixes at this critical UX time** Pros: Faster deployment time for these features, better user experience to mitigate dropoff during the pilot. Frees me up to focus on streamlining the front end and making it faster/easier to develop new features and fixes down the road. Cons: If backend were to have any issues we are scrambling. Developing new features right now will probably make unravelling their mess even more complicated (tech debt). **- Do neither**, use our financial resource for marketing/recruitment, worry about backend/front end help after fundraising. If you could only choose one, what would you prioritize? Should note that because of how messy and fragile the front end is, a simple bug fix often turns into an 80+ hour endeavor just finding the page/component it originates from.