Chrome extension manifest permissions migrating from V2 to V3 - google-chrome

Question

Am looking to migrate a manifest V2 extension to V3, but concerned extension might be disabled due to change in manifest permissions. My original plan was to create a new beta extension with existing V2 code and perms, install it from the chrome store locally, then update to manifest V3 perms and see what happens, but chrome store no longer accepts new V2 extensions.
Either the official documentation is purposely vague on the matter of permissions, or I missed something. Other SO questions I see are very specific. Hoping someone with more experience sees this and might be able to spot right away if anything may trigger with the manifest upgrade below. Ideally it's a smooth process given were already requesting a broad match on one of the content script blocks, and the permission list is also reduced.
Current manifest V2 (non pertinent values redacted)
{
"manifest_version": 2,
"name": "...",
"short_name": "...",
"description": "...",
"version": "1.8.0",
"background": {
"page": "background.html"
},
"content_scripts": [
{
"matches": ["*://*.example.com/*",
"*://example2.co/*",
"*://*.example2.com/*",
"http://www.example3.com/*", "https://www.example3.com/*"],
"css": [],
"js": ["js/content_script1.min.js"],
"run_at":"document_end"
},
{
"matches": ["http://*/*", "https://*/*"],
"exclude_matches": [
"*://example2.co/*",
"*://*.example2.com/*",
"*://*.example3.com/*"
],
"css": [],
"js": ["js/content_script2.min.js"]
}
],
"browser_action": {
"default_icon": "images/icon.png",
"default_popup": "popup.html",
"default_title": "..."
},
"permissions": [
"activeTab",
"background",
"storage",
"tabs",
"notifications",
"http://*/",
"https://*/"
],
"content_security_policy": "script-src 'self' https://ssl.google-analytics.com https://static.example.com https://api.example.com https://plugin.example.com https://example.com https://s3.us-west-2.amazonaws.com; object-src 'self'",
"externally_connectable": {
"matches": ["*://example.com/*"]
},
"icons": { ... },
"web_accessible_resources": ["/*.png", "/*.svg"]
}
New manifest V3
{
"manifest_version": 3,
"name": "...",
"version": "2.0.0",
"description": "...",
"minimum_chrome_version": "93",
"permissions": [
"storage",
"alarms"
],
"host_permissions": [
"*://*/*"
],
"web_accessible_resources": [
{
"resources": [
"/assets/*"
],
"matches": [
"*://*/*"
]
},
{
"resources": [
"chunks/*-*.js",
"ui/content-script/index.js"
],
"matches": [
"https://*/*",
"http://*/*",
"*://*/*"
]
}
],
"action": {
"default_title": "...",
"default_popup": "ui/popup/index.html",
"default_icon": { ... }
},
"icons": { ... },
"background": {
"service_worker": "service-worker.js",
"type": "module"
},
"content_scripts": [
{
"js": [
"ui/content-script/import-index.js"
],
"matches": [
"https://*/*",
"http://*/*"
],
"run_at": "document_end"
}
],
"externally_connectable": {
"matches": [
"*://example.com/*"
]
}
}