Well, I am seeing my instructor tomorrow evening to make a plan of action, and it could very well be that I take my skills test within a few weeks or so...
We will basically decide whether there is anything else I need to do (got 40 mins solo left) and discuss whether I am happy to proceed with test etc. I have been reading up on the AFE book about the PA38 - it includes all the notes for ground calculations like weight and balance etc, and this will be a good revision for the "day" !