I did some work on this game in the past. I got a vwf inserted and working, I inserted a few lines of your translation just to see how it looked. I haven't looked at this game for awhile and probably won't unless someone wants to translate it.

Wow, your font looks great! Could you share an IPS patch for the font, please? Unfortunately my knowledge of Japanese is rudimentary so I can only translate very basic sentences.
I'd like to note that I was inconsistent with the name of the kingdom. Pufftop is not an actual translation but is what Tenkai was localized to in the English versions of The Legendary Starfy for the Nintendo DS. Tenkai is the name of Starfy's kingdom that is mentioned in Densetsu no Starfy 1-4.
Tenkai is a combination of 天 (ten: meaning sky, heaven or celestial) and 界 (-kai: meaning world or kingdom). This means there are various possible translations like 'sky world', 'sky kingdom', 'heaven', 'celestial world', 'celestial kingdom' so I feel I should have just left it to 'Tenkai' or 'Pufftop' in my video instead of Sky World.
Some other terms from Densetsu no Starfy that were translated in The Legendary Starfy include these:
Characters:
*Stafy: Became Starfy. Media calling him 'Stafy' include like the movie poster in the Yoshi Theater in Mario & Luigi: Superstar Saga, official site links, Super Smash Bros. Brawl, the 'Baseball Cap', 'Wrestler Clothes' and 'Uniform' Stuff in Densetsu no Starfy 2. I believe Stafy and Starfy are interchangeable though, see
this.
*Kyorosuke: Became Moe.
*Rob-jiisan: Became Old Man Lobber. Note ラブ was romanized as 'Rob', not 'Lob' on the Rob-jiisan Shirt in Densetsu no Starfy 4.
*Manazuko: Became Kit Fish. (female)
*Namazudon: Became Fat Cat (male)
*Fōku: Basically unchanged. Became Fork (male)
*Māmeido: Basically unchanged. Became Mermaid (female)
*Tenkai Solider: Became Pufftop Guard (male)
*Hadehirari: Became Ruby (female)
*Bonbōn (DnS4 internal name: Bonbone): Became Konk (male)
Abilities:
*Flying Squirrel Jump: Became Glide.
*Dash Jump: Became Dash & Jump.
*Piyopiyo (guidebook name at least): Known as being Dizzy.
*Effort Swim: Turbo Swim.
*Spin Attack: Became Star Spin. Instead of the Star Spin being level 1-3, upgrades were renamed to the Mighty (level 2) and Ultra (level 3) Star Spins.
Enemies:
*Manmarucho: Became Bellybird.
*Mekamikku: Became Blinkfin.
*Mabo: Became Bobfin.
*Hotarika: Became Calaminer.
*Anchii: Became Choby.
*Paraso: Became Chumbrella.
*Mīmon: Became Flunder.
*Sumaimu: Became Glunk.
*Gyoppu: Became: Guppo.
*Rabirabu: Became Hopalop.
*Zerī: Became Jellysquish.
*Jiappu: Became Liftwisp.
*Aisouni: Became Lurchin.
*Toosenbon: Became Nogo.
*Myumyu: Became Nubble.
*Takometto: Became Octopult.
*Patokari: Became Patrol Crab.
*Pearl Keeper: Became Pearl Sprite.
*Wattobin: Became Pingoon.
*Bibibi: Became Pizzap.
*Rokkun: Became Rock Punk.
*Fukya: Became Sand Snark.
*Sukerugyo: Became Skelefin.
*Dokurotto: Became Skullpin.
*Giro: Became Snark.
*Angā: Became Spinebelly.
*Hotaden: Became Stangler.
*Atchī: Became Wahi Wahi.
Stages:
*Tenkai: Became Pufftop.
*The Sunken Ship (Japanese: ちんぼつせん) shares the same Japanese name of S.S. Logwater in The Legendary Starfy, so some fans think it's the same.
I'd like to note that some of the
Densetsu no Starfy playing cards suggest what the genders are. The gender of the character Wotsaruto is debatable, however. Wotsaruto wears a bow-tie stereotypically worn by males, and in Densetsu no Starfy 3 Wotsaruto uses the word 'boku' to refer to his/herself, used by males. Wotsaruto's playing card is Queen though and some other female characters use Queen.