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I am building an off the grid sound system.It is going to be on a bike trailer and main goal is that it is loud (target for 100-200 cyclist pedaling in the street).I don’t want bad quality sound, but I may sacrificed some very high fidelity if can reach more people, the audience are not audiophiles.

Currently I have :

With a lithium battery (36v nominal) and 1000WH and this class D amp ( 2.1)

AIYIMA Amplificador de alta potencia TPA3255, Clase D, HIFI 2,1, placa amplificadora de Audio Digital, 300W + 150W + 150W, para cine en casa|Amplificador| – AliExpress

it is a tpa3255 amplifier the specs are 300W for subwoofer and 150W for each channel at 4 ohms . Although this is very optimistic ( the subwoofer is BTL but the stereo channel are SE ).According to some reviews I have seen you can expect 90 W RMS for the woofer and 30 W RMS per channel for the HF.

I already have a subwoofer JBL Cs1214T ( 200RMS ) 12″ woofer 4 ohm 35hz-200 hz 90 db
there is the frequency response of the ported subwoofer
https://www.avsforum.com/attachments…p-pdf.2459670/

Then I need to choose the stereo loudspeakers, I am newbie on audio so I am a bit lost. I am looking for some speakers 35W RMS/ 4 ohms each ( if I choose 8 ohms the W RMS will be too low I think. I am open to any suggestion ( Full range, coaxial , open baffle,etc). As the sub only reach 200hz I was considering a set of full range speakers ( to have good mid tones , even if I have to sacrificed the high frequency a little bit, I don’t mind to much)
So considering:

faital pro 4 4fe35″ 30w
FaitalPRO 4FE35 – 4″ Mid-range
or mojador spm-200X/4
MONACOR SPM-200X/4 – 8″ Full-range

I was going to build a sealed enclosure but when using a speaker box simulation I realized the qts of these speakers are too high: Monaco qtc=0,97 and faital=0,73 . So no possible to have the recommended QTC around 0,7.

( there is a version of the faital with neodim magnets have a qtc=0,54)

1) It is sensible this type of speakers for the application and amplifier?
2) Will they work in a sealed enclouser or it is better another enclosure?
3) Will you recommend another approach?

Thanks in advance!