Suggestions to make building a field set up go faster

Welcome to the block party !
I built 4 fields, the first two took almost 10 hours plus a few more hours for painting, The next two went faster but I still need a few hours of painting. 

1.  Can’t decide if one should paint first- build second. Paint first- lots of flat pieces of wood. Paint second might make cutting easier but lots of corners and details to paint.I
2. IF the field is not going to be moved and taken apart-skip the metal inserts  H6.  Use 2 ½ or longer screws to hold everything together. Read page 14! Before you proceed without inserts.
3.    I found that a power drill hex driver made using the threaded inserts much more pleasant
4.  Note you can use 8- 10 foot 2X4 which are much cheaper than 12 foot ones-Might have some waste but if cost is a factor.
5.   Clamp the uprights-page 24 esp if using insert
6. Clamp the balance arm frame-when building the box