Acoustics Design for Small Home Office (Material Questions) and Living Room

I bought a house around a year and a half ago and am trying to fix my office first. It is very echo-y. My primary use case is WFH, podcasts, and other vocal related activities. There will be some gaming, music listening and whatnot, but that is a slightly lower concern as I dominately use headphones for these activities. After a ton of reading, I have confusion on what materials are better at what depth/air gap. I have attached a detailed rough scale blueprint of the office and a picture of where the clouds will go.

Drawing below is roughly to scale with 1 grid spacing equals 6in x 6in.

The rooms dimensions are 13ft 10.75in long, 10ft 4.25in wide, and 7ft 8.75in tall. The back wall panels are limited to 3.5in deep to not interfere with the door opening and cleaning the aquarium. Planned to be 18in wide and 4ft tall. The aquarium in the future will be upgraded to 48x22in. I was planning for 36x24x24 corner bass traps in the front only. Then 2x 24x48x6in and 1x 12x48x6 inch panels in the front.

Still debating the sides of the TV, but could theoretically wrap the sides of the tv with 2x 36x18x(4-6) inch panels and suspect the front panel would be a first reflection. Additionally going to hold off on the one behind the door until after trying the front.

I have some auralex 24x24 triangle rigged panels to position over the seating position, but only have 10in clearance between the fan and ceiling.

My confusion is with materials by thickness.

1) for the front panels, I could frame in 1x6(5.5) or 1x8(7.5). Monitors would have to be closer to the panels if 1x8. Which materials would you fill with and 3" with 2.5" air gap, 4" with 1.5....?

2) what materials would you fill the corner traps with?

3) what material for back wall traps at 3.5" thickness?

4) is this a decent design, overkill, etc? Concerns?

Part 2 - Living room - Not to scale, house layout diagram below.

I am also looking to make some clouds for my living room. House is a semi open, "Row house" design at 54ft long with kitchen in the front @20ft wide by 15ft long, a 7ft wide 15ft hallway, and a 16ft wide by 25ft long. This creates some terrible reverb. The ceiling is vaulted, 93in low point and 116in peak. The lights are around 106" apart. I have approximately 12in of height i can consume. I was planning on a 3x 24x48x9.5 inch panels with 3 inch separation between panels. Need to test the cloud doesn't block light at that height. I will tackle walls later, but working on painting walls and layout this year.

1) would you go 6" with 6" air gap. 9.5" with 2.5" air gap?

2) is it fine to have the panels parallel with the vault of the ceiling? Or should it really be parallel to the floor? May cause lighting issues if parallel to floor.

3) given the depth you recommend, what fill material would work best?

4) Is the material safe when front band back wrapped, with a ceiling fan running?

I live around an hour outside of DC and have access to lowes/home depot. The other option is have found is capital building supplies, who lists rockboard 40, comfortboard 80, and a few other rockwool product (not all currently available, but I can wait). They also had 703, but it was pricey.









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