your reply to the feedback is very clear for other user to read.
as long as you use this ebay-account only to buy, negative ratings wont harm you (buying is just the same with 100% or 35% positive ratings - it's always the buyer who chooses the seller and no seller can stop you from bidding in the last 20 seconds). just never try to sell with a bad feedback profile - it would keep buyers away and the biddings low (so if you get many revenge negatives on your buying account and want to sell, it's better to open a separate selling-only account).