opst is the expert on this, but roll up should be simple.

来源: 于 2025-01-28 11:38:10 [旧帖] [给我悄悄话] 本文已被阅读：次

Just make sure you always roll up with credit, rather than debt, and use time-value as your friend.

Opst has a systematic approach to this, maybe he can explain better