Hi Chris
This should be the first of further classes, so as you are just completing Grade 1 I’d strongly suggest waiting. There will be a lot of skills and techniques in use that you are yet to discover. If you start to struggle you will become demoralised and that could actually lead to jacking in the guitar completely. This is a common problem that folks that try running before walking. You still need a shed load of foundation skills to be at the level to undertake this course. This may sound harsh but look at it more like tough love. I am well down the road from where you are now and thought long and hard about my skill sets being adequate for BLIM and spent quite a bit of time reviewing stuff I have done in the past.
So for now bide your time build a strong and deep foundation following the 3 beginner grades and acquire some chops. You will then be well and truly ready, especially if you have dipped you toes into Grade 4.
Just MHO and your mileage may vary.
