Talk her down $50 and go for it.
Case trimmer, what, $30 or $40
Reloading manuals are not cheap
The RCBS parts should have a lifetime warranty on them.
The RCBS JR2 loading press does not look like it will work with a piggyback. If you want to use a piggyback, get a reloader special 5 or a rock chucker.
Overall, it looks like a good starter kit.
I do not see calipers listed, so you will need to pick a set of those up. I prefer the dial calipers. I had a pair of stainless steel lee for my calipers.
Get the kit, and get some calipers.
When you decide you want to make the jump to progressive, buy a reloader special 5, RCBS piggyback, and a uniflow charge thrower.