Hi McGregor03, welcome to the forum and online community.

May I suggest you review this thread called How To Apply For A Fiance(e) Visa

Do be aware that entering the UK on a Fiancee visa will require that you apply for another visa called Further Leave to Remain (FLR(M) ) once you are married.
The waiting times for FLR(M) approval (for the majority) can be really long (currently up to 9 months), the importance of this is that you will not be allowed to do any kind of work (paid or unpaid) until that approval has been granted.
Not trying to negate your plans, but just informing you of the situation.
Entering UK with a Spouse Visa allows you to get working from the time you arrive. You also have 30 months before any further visa applications need to be made.