Turtle,

1/4 ton oversized should not hurt. In the old days we figured up to
25% oversized was OK. Now it is recommended to oversize no more than
15%. Of course, you are sometimes limited by available sizes.


Walter,

If the conditions stated by you are design conditions for your area,
you are WAY oversized! When you are at design conditions, inside and
outside, your unit should run constantle or nearly constantly.

Stretch