I just reread your original post, and since you have already used the machine and like it, I would just go for it. Lots of quilters have more than one machine. And you are a quilter and garment maker now!
I realized after I wrote that the machine I used to make clothes on had lots of different stitches, mainly decorative, and I just never used them. That is probably what this machine has that your current one doesn't have. Ha, I just looked up at my machine, the one I mainly quilt on, and it has 104 stitches. I waste so much of this good machine by not using it. Got me thinking here....
But, I am going to say to go with what you want. Making clothes is very satisfying, particularly if you are hard to fit. I hope you enjoy your new hobby for years and years, like I did.
Dina