Find Every Tuesday or Thursday

Hi Group,

I'm starting to develop a project schedule which has a lot of sub-projects within it.

I wish to start 2 projects per week & want to start 1 on Tuesday's & the other on Thursday's

If I was to start a project on, 04/12/16 (Tuesday), then I'm looking to find every following Tuesday or Thursday until the end of the year

Starting Date, 04/12/16
In cell I14 - I have a "Yes" / "No" drop down which stating to start 2 projects per week or "No" for 1 project to start for week.

With this function,
=IF($I$14="Yes",K31+2,IF(I14<>"Yes",K31+7))

I'm not getting every Tuesday or Thursday.

How to modify?

Thanks