Hi NaoB, yeah April/May is just about the best time to visit Goat/Am Fasgadh or anywhere in the Highlands for that matter. Before the midges and ticks appear, before the bracken gets in the way and also tends to have periods of settled good weather.
Loch Maree crag is also a must visit for folk in your grade range.
It's only another 1.5hrs or so further on from the camel and (in my opinion) far superior. Amazing trad too.