Maulana Fateh Muhammad Jalandhari is among Ulama-e-Haq. He is indirect disciple of Shah Ishaque (RA). His Urdu translation and Tafseer is authentic. You can read it. However, if during your study you are unable to understand any thing or you have any objection mark it with a pencil and consult any Alim so that you could be saved from any mistake in understanding the holy Quran and what you understand is free from doubts.

Allah (Subhana Wa Ta'ala) knows Best

Darul Ifta,

Darul Uloom Deoband, India