The parting statements are Good Luck !!

However,
don't under-estimate the speed and power of that wave. So far, I haven't see SUP's (and riders) being quite capable of the speeds that good surfers generate on shortboard equipment (and the responsive accelerating in the tube that you can more easily generate on say a 6'6 step-up size board +...). It is one of the longest and fastest waves around, when the swell is on. Plus it is a very crowded wave.
I would be heading to Tiger Tracks down in the bay. It is a high tide wave. There are a couple of little options down there depending on swell, but the Right Hander is the most reliable.... Also, other places in Indo have a bigger selection of waves within their immediate proximity, compared to G-Land.
HOWEVER, having said that, I would hitting Sumba with the SUP. Less crowds. Worst case, ferry leaves Bali 1 or 2 times per week. You could get any size board onto a ferry!