you should not apply for 5 years u know,at least go straight to fiancee or married here,what makes of not marrying here straight though ?
On your question about the bank statement ,yes at least 3000GBP would be ok for the ECO that u can support your wife or fiancee
Oh btw, spouse is easy to obtain,how ever i never heard of a fiancee visa also denied totally from any member of this great forum
And wishing you goodluck on future application.also it wont affect any of your future application about the denied result on that 5 years visit visa u applied b4,as long as you been satisfied the ECo that you have sufficient funds
