https://www.wisecashhq.com/blog/images/build-learn-scale.png
At this point (and I discussed that with bootstrappers), the sane thing to do is focus on increasing the angle of the curve, learn how to sell better etc.
My axis of progress include things like improving the copy-writing on the home page (not catching enough) to increase conversion rate, improve the sign-up process, offer free email courses (on how managing cash flow with WiseCash will affect your life for good) to people going by my blog, offer useful articles, etc.
I split my time between freelancing and this work these days, and I make sure my company remains afloat by using WiseCash (which is fairly meta, when I think of it).
I'd also recommend experimenting with not taking card details up front, and seeing what that does to your trial/sign up metrcs.