ROM First & Holy Matrimony Later

Was wondering if I can register for my wedding at ROM first. So I can proceed to get a house and paperwork done.

After a year or so (saving money in the meantime), I have a Pastor (don't need to be JP) to conduct the Holy Matrimony Service and bless the union before having my banquet.

Is such arrangement allowed? It's not possible for my church. As we would have to wait 1 year for Pastor to be free to officiate the wedding. If I register with ROM first, my pastor will not officiate the wedding.