Should I use one form or Two?

I have two forms (below) one is a trip calculator and one a spending money calculator which are very overwhelming due to the amount of events users can calculate.

There is a spending money radio on the trip calculator(if clicked "yes", will open the spending money calculator in new tab, functionality not added yet)

From a usability perspective should I:

Leave the two calculators separate as they are large enough visually already OR Add a conditional section to the main calculator where if clicked yes, the spending money calculator will open in the same page as the main calculator making the whole calculator longer if opened?

http://tripcalculator.travel2mania.com/WrestleMania.php

http://spendingcalculator.travel2mania.com/WrestleManiaspending.php

The calculators are built using a form builder, and there are 8 different files which make up the total code base, so its too large to attach here.