I have been wanting to get this route done for ages, and this weekend don't look too bad so far.
I am expecting it to be snow free, (unless anyone knows otherwise), but I am conscious there can be a faff finding the First Platform. We are climbing as a 3, and I will probably be doing all the leading, so now way will I have chance to go up Raeburns.
Pics i've seen from CMD today make it clear its snow free.
Coire Leis approach as described by OP.
Its a mountain route and as such prone to loose rock and it'd be wise to be especially careful early in summer season where it won't have had many ascents yet.