My niece has asked me to do her a sweater, and I have tons of Bolivian alpaca in my stash. The yarn was supposed to be for a different project, but my friend in La Paz got the wrong weight. Now I am left with 900g of 2-3 fingering/sport weight yarn. Pattern calls for a US 8 needle and a gauge of 17 sts & 22 rows = 4" x 4". My gauge swatch worked up to 3" x 3" with 2 yarns stranded. I really can't go higher in needle size as fabric becomes too loose. If I add a third strand, I'm not sure I'll have enough yarn (pattern calls for 425g). So, I need a little sanity check to see if my adjustment calculations are correct for 2 strands with US 8 needles.
3" x 3" is 75% of required gauge. Initial cast on for desired size is 168 sts. Therefore, with my yarn and needles, 168 is 75% of initial cast on. 168/3 = 56 sts per quadrant (i.e. 25%). 56 x 4 = 224 sts for total cast on. Pattern has a larger size with initial cast on of 216 sts because of pattern repeat, which is pretty close to conversion number
I assume I can follow the instructions for this larger size and end up with the desired size, being mindful that I need to keep track of garment finished measurements and adjust rows if necessary. Yes?
I would greatly appreciate any advice or suggestions to avoid pitfalls of which I might not be aware.