In reply to SDee:
The gullies will hold snow, the question is what gully will be in condition and safe in late April, which nobody can really answer even with experience unless they hold a crystal ball.
If it’s late April, keep a continuous watch on the weather forecast, for example summit temp is ranging +5/6° this weekend with rain forecast, could see quite lean conditions even on the Grade 2 gullies. During the week there is a temp drop, but again this forecast may not fall within your planned time.
I would formulate my trip from daily weather a week leading up to the climb day, weather on the day, SAIS report, recent ascents (UKC and social media - never take at face value), freezing level and use guide book to note a few higher alt climbs on varying aspects.
Hope you get out and have a class one!
