Any advice pls?

We have filled out rough copy of the forms, under salary requirements, nothing's changed - still on 35k a year, minimum outgoings will show bank balance of £3,500 on the date of appointment in January. Not kept loads in bank each month as we've been withdrawing and spending it, trips away, stuff for house, wedding...etc etc, flights for March next year. I know they don't require savings if i apply under salary, but I'm sure it will help showing £3,500, as showed 2k for spouse visa?

Do we need to get Citizens' Advice or a visa advisor to check these forms, or are we ok just fill 'em out best as we can, we're going in person so any issues can be dealt with on the day. Nothing's changed finances wise, we've got all wage slips, bank statements, letter from landlord and employer...our main worry is same as with fiance visa... just a bit scared it won't go our way. Are we right in thinking its just an extension of entry clearance we already have and just a formality and fee extracting process? What's the success stories??????