Maria, congrats on the purchase!
I know u r a planner so by thinking ahead and requesting 13-14 months ahead, you will be successful.
Spain in May and October, Aruba in May,June Sept-Nov.
In fact, I would put a request in for MFV 14 months ahead for the same week u have a reservation....see if you get a match using the silver week and then take the MFV week and deposit it in II - it will be a SUPER trader plus get an accommodation certificate from II for another weeks vacation