I started out on RAPS in the UK, and it is slow going at this time of year.
You have to be really determined, and be prepared for long weekends sat in the rain! (or practising exits, learning to pack, CH1 etc.)
Eventually it'll pay off, the clouds will break and you'll see that clear blue.
University clubs are a great way to get big discounts!
They should have there own gear which you can use, so you can hold off on buying your own for ages n ages.
I wouldn't waste your money on a tunnel, keep it for those good weather days!! You can visit the tunnel if your look like a bag in the wind on your 10-15 sec delays.
I'm with Liverpool University, we jump at the NWPC (Cark). We have RAPS courses @ £145 and jumps @ £25-30 each. You'd be welcome with us. Liverpool University Skydivers