Glad you like it! Indeed, I tried to make my instruments light - I originally had a Wagner tuba instead of the 'low plucky string' but it proved too heavy. The 'oompa pattern on beats 2 and 3' were the result of me taking inspiration from a 3/4 waltz, which inspired me to have a similar pattern - in 4/4 you can get away with any such thing!
Thanks for the in-depth explanation, I appreciate it <3