So I doubt there is another synth more ready for your Strat, which is news to me 
[Blockierte Grafik: https://live.staticflickr.com/65535/50175692432_cb72778aea_c.jpg]
I was researching the settings and I noted people have been confused about it the past, and many use the TI interface.
So I hope this will get you going standalone in no time:
Open and save a init patch, rename it INPUT. Some machines may have these already onboard, mine did not. There is a category for them. Mine is empty.
Plug guitar into left input.
In single mode open edit menu and navigate to the screen below: Input "static" "left" (Output I did not change, but there is a chance you might have to mess with it)
[Blockierte Grafik: https://live.staticflickr.com/65535/50175692177_cb05a7503d.jpg]
Open Congfig and find your "amp" on the screen below. You should not need Boost, but it does sound nice.
[Blockierte Grafik: https://live.staticflickr.com/65535/50175692107_847dac12da.jpg]
Now you can use those stompboxes and a whole whole lot more
[Blockierte Grafik: https://live.staticflickr.com/65535/50174895423_c0dfbabcf9.jpg]
A user here made this years ago. Supposedly these are what is emulated with the "stomp" boxes added in OS4.
[Blockierte Grafik: https://live.staticflickr.com/65535/50174894933_6d77a91201.jpg]
Works fantastic. Sorry images showed in preview, but links work