How do upgrades from different sources/abilities stack?

For example: A random minion group is attacking Super Awesome and Amazing Jedi Holzy from medium range. Holzy has Sense activated (with both upgrades), and in his previous turn, performed the Side Step maneuver. Upon being attacked, Holzy decides to suffer 3 strain to use all 3 of his ranks in Dodge as well.

How do all of these abilities interact with each other? Does Super Awesome and Amazing Jedi Holzy simply add up all six upgrades at once making the difficulty to hit him RRPPPP? Do the number of difficulty dice added stop at 5 (Formidable) so the difficulty is RRRPP? Are the sources added separately, so it would be RRP for the Doge upgrades, then bumped to RRRP for the Sense, and finally RRRR for Side Step added in?

Thanks in advance for your replies. You're all Super Awesome and Amazing people.Well except for that one guy, you know who you are.

You apply one upgrade at a time. You can end up with more than 5 difficulty/proficiency dice this way (as well as on opposed checks against very very tough adversaries and a mean GM).

Each upgrade changes a purple to a red, however if there are no purple dice to upgrade you add a purple, which will then be upgraded to a red if there are more upgrades.

So starting at medium range you have 2 difficulty dice.

PP

RP

RR

RRP

RRR

RRRP

RRRR

6 upgrades at medium range leaves you with 4 challenge dice.