.48 would look nice, they will compliment the center stone nicely. To give you a reference my ring has a 2.36 RB and the sides although pears are .68 TW. My RB stands out nicely. .26 may be too small in proportion. Just my 0.2
Thanks SQ, I love it too. I do think going with two .48 with that size center stone would be more in proportion, but it''s what look you want to achieve that counts.