よかろう

would be good, would be fine

→ 良い
よかろ good + う Volitional
adjective Rare #24,301
would be good, would be fine Somewhat old-fashioned or formal; often used to make a suggestion or say something is probably acceptable.
JA: 少し休んだ方がよかろう。
EN: It would be better to rest a little.
Forms of 良い

君が来たのだから、始めた方がよかろう。

Since you're here, we'd better get started.

彼なしで始めてもよかろう。

We can start without him.

それもよかろう

That would be fine too.

— Sanjuro (1962)

師匠達への約束を果たしてから戦でも何でもやればよかろう

You can go off to war or do whatever you like after you've kept your promise to your masters.

— もののけ姫 (1997)

よかろう

Very well.

— レミーのおいしいレストラン (2007)

ここで待つより家に帰った方がよかろう。

We might as well go home rather than wait here.

行けばよかろう

You might as well go.

— ストーカー (1979)

しかしみんなももう帰ってよかろう。

But I suppose everyone can head home now.

お前たちにも内緒にしてきたんだがもう話してもよかろう

I've kept it secret from you all too, but I suppose I can tell you now.

— High and Low (1963)