You'd have to use the direct monitoring feature, going from the headphone socket of the Scarlett to the RC30, I think - otherwise latency will come into play.
Maybe you can plug the mic into the XLR on the RC30; the keyboard and guitar into the 6i6; then take a stereo jack to mono jacks cable...
Anything you want looped has to go into the RC30. You want the output of the RC30 connected to your Scarlett interface (or an amp first for guitar amping). Anything you're not going to loop can plug direct to the Scarlett.
I don't think you want to go from the Scarlett to the looper at all...
Or, you could go direct from the looper to the scarlett using the jack output, but your guitar tone will be dry (but I guess you're mixing keyboard and vox in, so maybe that's fine).
I think OP wants to record the output of him playing with the looper. Therefore, you want instruments -> looper -> amp -> mic/lineout -> scarlett -> PC.
Sound great Rami! Don't have any nits with this one (much as I'd like to!).
I read Schwarz's comment just as I started listening, so I don't know if the tambourine is distracting, but it certainly sits better in the chorus. Maybe if it didn't have the double hit on the 3rd beat during the verse...
I have zero principles and am only interested in the end product. I'm not a good player or singer and have no mic technique. The only time I get to practise is the short time I spend in my little studio, so I have to cheat and cut corners to get anything decent. So, I copy and paste sections...
Being a Manics fan I used to want that guitar so much. Nowadays, I think I'd go for wine red if I got a custom. I couldn't be trusted to look after one properly, though.
That looks about right, could also be the Gibson ES-330, which the Casino is based on.
https://en.wikipedia.org/wiki/Epiphone_Casino
https://en.wikipedia.org/wiki/Gibson_ES-330