I am a living donor, with 2 arteries and 1 vein, and I have worked with over 20 other donors, many who have had 2 arteries... This is a COMMON... situation... The arteries are sewn together.. there is no down side for the recipient... This of course is assuming that you are at a experienced transplant center....of which there are many...
You can check UNOS data for your site and DO speak with your doctor...
I say... no worries.. a good match with 2 arteries is NO PROBLEM