Help with my setup - routing to multi outs

I want to have 2 x sends when we play live.
1 - A mix to FOH AND to the bands IEM rack that does have the cab sim (ie Outputs 1/2, 4)
2 - A mix to my Orange Power Baby 100 into 2x12 that does not have the cab sim. (output 3)

The below snapshot shows my current setup, where Line 1 splits to Line 2 and goes to XLR 1 and 2 for FOH (currently not able to also select out 4)
and line 3 splits to line 4 (without the cab sim) and goes to Out 3 for the Power Amp

The issues I see here is I can’t also have TS output 4 assigned as well as out 1 and 2 as I would like to send output 4 to our IEM rack so the band can hear the guitar with the cab sim
And secondly, the CPU is getting up there.. some of my presets are >60%

Is this the best way to achieve what I am after, or can someone suggest a better routing?

Thank you!!