3 ohm speakers bridged - Will amp be okay?

Thank you for the reply.  I’m going to try it out. I went ahead and lowered the speaker levels at the rear speakers all the way down. With just the sub and components, it didn’t sound bad at all. I realize this isn’t the best representation of what it might sound like, but figured it would at least provide me with an idea. I do plan to swap out the Infinity tweeters that are hard dome, to a set of soft down tweeters. So many ideas. So little time.

Over the weekend, I disconnected the rear speakers at the amp and am only running the components up front now. I re-tuned the amp, adjusted the crossover again, and fine tuned the sub and everything sounds great so far. I haven't pushed the system enough to cause the amp to go into protect mode, but I'll keep an eye on things.

In the past, I loved having that higher bass output, but as I'm growing more knowledgeable, I have started to change my focus towards the SQ spectrum. Now it's trying to find that "perfect" balance. This recent change surprised me. The lack of rear speakers isn't as noticeable as I thought it would be. Sound staging has improved, but the "brightness" of the hard dome tweeters up front are a bit much. Once I put in soft domes, I am sure I will like what I hear even more. I am also trying to figure out how I can best move the tweeters lower, out of the sail panels and closer to the mid. I know this would require some moderate to extensive custom work, but I'm confident it will only improve the SQ and staging. I am also planning on getting a DSP at some point within the next year. I am trying to decide between the AudioControl DM-810 or the Audison Bit One (leaning towards the latter). No matter which route I go, I am going to ditch the 5-channel amp in favor of a 4-channel to drive the tweeters and mids up in the front, plus remove the passive crossovers and go active via the DSP. For the sub, I'll find a monoblock amp that offers an equal amount of power output in relation to the 4-channel.

In the meantime, I have contemplated what would happen if I connect the rears to the speaker outputs on the HU as you mentioned. Since I have a high pass crossover set at 100Hz right now on both front and rear outputs (left and right component set respectively), connecting the rears to the speaker leads from the HU would mean the filter on the rear output would apply to these as well, am I right? If so, this would be fine since I don't want anything lower than 100Hz going to coaxial speakers anyway. Plus, the lower wattage would help to reduce the sound output from them, which I would think would help offer a subtle to moderate fill from the back. Keeping the 5-channel amp in play for now, I have even considered the doing this, and then unbridging the front speakers and running the tweeters on channels 1/2 and mids on 3/4. The only roadblock with this plan is that there isn't a way to crossover the tweeters at anything above 250Hz at the amp or the HU, and since the passive crossover would be removed in this scenario, I would have no way of setting a 2-3k Hz crossover. Plus, I'd also have to run a second speaker line into the door, which I was planning to upgrade any way.

At this point, I'm just trying to figure out what I can and can't do based on my current parameters, outside of purchasing the new equipment. I know once that happens, I'll have greater flexibility, but at the end of the day I'm enjoying the learning experience.