Good! Sounds like things are moving along.
If they do get the 2 weeks into the SVN, you want to make sure you inherit or are gifted the 2 weeks, because if you buy them, the SVN membership won't transfer. I think the easiest way to do it would be to have your dad add your name to the deed and have all further communication and MF statements sent to you. Then, you will automatically inherit the properties some day.
Before any permanent changes are made, you should really get on a 3-way call with Starwood and your dad, because these things can get complicated. Or have your dad ask for the info. in writing, before you make any decisions.
As far as your exchange plans - with 3 resorts in Hawaii now, that should be a fairly easy exchange through the SVN. Since the 2 weeks have a relatively low Staroption value, you may have to combine the Staroptions to have enough options for the exchange you want.
This is what another Tugger estimated that you will have for Staroptions:
Week 41 - 67,100 StarOptions
Week 48 - 44,000 SO's
Total - 111,100 Staroptions
A studio at any of the Hawaii resorts is - 67,000 Staroptions
1 bdm. - 81,000 Staroptions
2 bdm. - 148,100 Staroptions
So you have enough Staroptions for 1 week in a studio or a 1 bdm., but not a 2 bdm. That wouldn't be my first choice. First of all, Hawaii is an expensive flight from DC and secondly, it's an all day flight - each way. So with a one week trip, you essentially have 5 days of vacation for lots of $$$. Going for 2 weeks gives you a lot more value for the cost of airfare.
From DC - you should strongly consider Harborside, Atlantis - shorter flight/cheaper airfare. Also, your Staroptions will stretch farther there. During some seasons you would have enough Staroptions for 2 weeks or a 2 bdm.
As an alternative, if you deposit the 2 weeks with II, you could get 2 weeks in Hawaii on an exchange - because with II you exchange a week for a week and you don't have to worry about Staroptions. - Just something to think about. For this to work, you would need to be flexible about when you go to Hawaii and what resorts you will accept. That's why I said that these 2 weeks may have more value with II exchanges, because they don't have a high Staroption value. So for the same MF cost (+ exchange fee) - you could go to Hawaii for 2 weeks through II, vs only one week through the SVN.
If by "abroad" you mean Europe - that will have to be done with II - because Starwood has no European Timeshares. Also, I don't think Europe is an easy exchange, but since you seem flexible, that helps.