Nixodian,
I have traded many IC and modified IC trades over the years and may be able to offer some advice. First, however, I need to know what the expiry is. Is it this week or next? It was not entirely clear from your post or title, and the duration matters to your decision making.
The next thing is for you to think about. You have 8 IC's and the spreads are 2.5 points. This means a potential maximum loss of $2000.00 if you do nothing and either side completely runs through past the longs at expiry. Obviously, you should not reveal your account balance to anyone or answer this online, but you need to ask yourself: Can I afford to take this loss easily? If your answer is yes, fine. If not, you should reduce size until comfortable.
One of the ideas often promoted by various online "authorities" is that you can make "adjustments" (roll up, roll out, size up, etc.)that will magically preserve your profits so that you cannot lose trading IC's. This is mostly nonsense! No option strategy is immune to market conditions.
Now, if you ask, can I keep losses in check or preserve gains, the answer is sometimes yes.
In general, you have quite a few choices, depending on what you think the market will do--
1)Right now you are fairly nicely positioned between the short strikes. I didn't check, but you may have a decent profit if the expiry is this week. In general, with options trades, the last few cents of profit is not worth the trouble. Lots of people recommend getting out with 80% of your potential profit and moving on. That is probably good advice most of the time.
2) Since your trade has been entered with deltas of about 20 or more, stevegee's advice needs to be modified for your situation. The doubling of premium necessitating closing might be a better approach. You could also use a delta of 35-40 as a guideline for this. I would absolutely not recommend letting any of the short options go into the money. If that happens, your losses will escalate rapidly. If your expiry is this week, you should be watching closely.
I am glad to see that you put on your IC after earnings. It is considerably safer to do that. I personally only put "IC like" positions on indexes like RUT, NDX and the SPX.
By the way, I never use a standard IC construction (with equal amounts of spreads and equal distances away from the price) anymore with indexes.