Johann Baptist Cramer's Op. 27 Sonatas are important pedagogical works from the late Classical period, emphasizing pianistic technique. They are characterized by their balanced phrasing and clear melodic lines, designed to develop the student's technical facility.
Focus on developing evenness and control in rapid scalar passages and arpeggios.
2 Piano Sonatas (Op.27) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of 2 Piano Sonatas (Op.27) lasts about 18 minutes.
2 Piano Sonatas (Op.27) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.