I think it looks good. My own Old Ale starts at a higher OG (more malt and more sugar), but I do like the level of Crystal you’ve chosen…it softens nicely with the 1 to 2 year aging. I don’t use any brett in my long aged ales, but it certainly won’t hurt. I always also add more hops than normal to compensate for what will fade with aging.
I do several batches a year, so I can always enjoy some properly aged, and also so I have annual top-up for my Burton solera (which I’ve kept going since 1991).