Absolutely! In fact I wont get rid of my AA1942 Supreme map until you do. My group is just too used to playing on these nicer and larger maps. I like not having seams too.
Just my opinion though, the OOB map size is 40" x 26" so a 45" width might be a bit big. It’s too wide for a pool table and won’t fit in a standard 36" mailer tube for storage. The 64" x 34" of your AA42 Supreme map was just the right size IMO. It could be placed on a pool table or a 4x8 with just enough room around the periphery for trays and drinks. Might save you some time to just modify the original AA1942 supreme.
Love your maps and look forward any new edition.