I was married for over 60 years when my wife died. I would do it all over again, with the same woman.
Bank account? For me, it was I throw my weekly paycheck on the table along with hers, and she took care of it.. Each used what we wished and saved the rest,,neither being spendthrifts, it worked.
Tips?
A) As you stand before all you friends and relations to take your vows, remember you are standing before God also, and don't enter with the idea.."If it doesn't work out...well"..
B) You both are Christians. If it is not so now, find a good Bible preaching and teaching church and attend regularly. ..Not only for the teaching, but also for a church family, who can help through any rough spots.
C) Any bad habits..especially any that can be addictive, start breaking them now.. since they can put a strain on any marriage.
D) Always refer to her respectfully around other people..self explanatory..
E) Any decisions to be made...think of your other half first. If you both do that, you will build a strong marriage.
..Best wishes..and blessings..