@UttaRetch To avoid rolling edges I suggest you go for a warp knit rather than a weft knit which will be much more stable and less rolly.
I made this a couple of years ago from a warp knit with very little stretch, only about 5% mechanical stretch.
Boyfriend cardigan from Love notions.
[ You are not allowed to view attachments ]
I did faux felled seams - overlocked, pressed to one side and stitched down. Triple zig-zag and trim close or an overcast stitch would in this case work just as well as overlocking.
I've also made
Style Arc Terry but without the tie or front darts (I didn't want to break up the print design). It's a much stretchier weft knit, about 100% stretch and all the seams are 4 thread overlocked. I really do think that would have been very difficult to sew without an overlocker
[ You are not allowed to view attachments ] [ You are not allowed to view attachments ]
The amount of stretch depends on the lycra/spandex/elastane percentage. I don't think there is any in the black fabric, but quite a lot, maybe 10% in the pinky brown print. Both fabrics came from The Textile Centre.