I just tried on a FT vs Dalbello... I'm a solid 23 in almost every boot but FT I'm a 22, the millimeter in the 23 is larger than the Dalbello too. But as any footwear industry goes, all companies run different. Maybe Rossi runs really big? I've never sold Rossi boots in any of the shops I've worked for (which is weird now that I think of it).
I'd go to a boot fitter and see what they say, I think you'll be fine. THe liners will pack out quite a bit (which is the reason I didn't buy the Soul Sisters by Full Tilt and went with the Dalbellos again, much nicer materials and higher end manufacturing in the Krypton liner). If you have a wide foot, you may want to think about a different boot since you say they are not roomy at all but I tend to like my boots tight, as long as you arent getting foot cramping! Also, if you put a footbed in the boot, it'll make the boot longer, giving yoru toes more more as well as increasing support and circulation ~ this would be my most suggested idea.
As for your english, I couldnt tell! So you must be quite good at it (except for the finger/toe thing).